[Form 4] VICOR CORP Insider Trading Activity

Rhea-AI Filing Summary

Vicor Corporation (VICR) director Andrew D'Amico reported option exercises and same-day open-market sales on November 12, 2025.

He exercised non-qualified stock options for 577 shares at $69.04 and sold 577 shares at $98.44; exercised another 577 shares at $69.04 and sold 577 shares at $100; and exercised 754 shares at $53.07 and sold 754 shares at $99. The filing notes these sales were effected under a Rule 10b5-1 trading plan adopted on September 12, 2024.

After these transactions, the option grant with a $69.04 exercise price shows 0 derivative securities remaining, while the grant with a $53.07 exercise price shows 3,015 derivative securities remaining.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

D'Amico Andrew

(Last) (First) (Middle)

25 FRONTAGE RD.

(Street)

ANDOVER MA 01810

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
VICOR CORP [ vicr ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/12/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/12/2025		M		577	A	$69.04	577	D
Common Stock	11/12/2025		S(1)		577	D	$98.44	0	D
Common Stock	11/12/2025		M		577	A	$69.04	577	D
Common Stock	11/12/2025		S(1)		577	D	$100	0	D
Common Stock	11/12/2025		M		754	A	$53.07	754	D
Common Stock	11/12/2025		S(1)		754	D	$99	0	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Non Qualified Stock Option	$69.04	11/12/2025		M			1,154	06/24/2025	06/24/2030	Common Stock	1,154	$0	0	D
Non Qualified Stock Option	$53.07	11/12/2025		M			754	06/23/2025	06/23/2033	Common Stock	754	$0	3,015	D

Explanation of Responses:

1. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2024.

	/s/Kemble D. Morrison Attorney in fact for Andrew D'Amico	11/13/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did VICR director Andrew D'Amico report on Form 4?

He exercised non-qualified stock options and sold the resulting shares on November 12, 2025 in three transactions.

What were the exercise and sale prices disclosed by VICR?

Exercises at $69.04 (577 shares twice) and $53.07 (754 shares); sales at $98.44, $100, and $99 for the corresponding share amounts.

Was the VICR insider trading under a 10b5-1 plan?

Yes. The sales were effected under a Rule 10b5-1 trading plan adopted on September 12, 2024.

How many VICR options remain after the reported transactions?

The option grant at $69.04 shows 0 remaining; the grant at $53.07 shows 3,015 derivative securities remaining.

What is the relationship of the reporting person to VICR?

He is a Director of Vicor Corporation.